Khatun, Rahima, AS Islam, and FZ Majid. 2007. “Study of Water Hyacinth of Bangladesh IV: Comparative Study of Pollen Grains and Development of Seed in Both Long and Short Petioled Forms of <i>Eichhornia crassipes</I> (Mart.) Solms-Laubach”. Bangladesh Journal of Scientific and Industrial Research 41 (3):189-202. https://doi.org/10.3329/bjsir.v41i3.289.